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A painter from Bakersfield told me to stop sanding at 320 and I haven't looked back
I was talking with an old painter named Ray at a shop in Bakersfield last month while we were both waiting on parts, and he asked why I finish my primer with 320 grit before sealer. I told him that's just how I was trained, and he said to try 400 on a test panel and check it under a bright light. I did it on a dark blue fender the next day and the scratches that always ghosted through my base coat were just gone. Cost me about $8 for a box of 400 grit paper and it saved me a whole respray on that job. Anybody else change their final sand grit after talking to someone older in the trade?
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oliviagrant18d ago
Ray was onto something about more than just grit. I ran into the same thing years back when a guy at a paint supply house in Modesto told me to stop buying cheap paper and step up to a good brand in 400 and 600. The cheap stuff breaks down and the grit size is all over the place, so you get random deep scratches. Good paper cuts more even, and you use less of it because it keeps cutting instead of loading up. Once I switched I quit chasing pigtails in my sealer coat too.
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